i'm mitt romney, and i approve this message. xxxx >>> on the broadcast tonight, closing the gap, the new polling numbers that show how that debate changed the race, and the new front romney opened up on the president today. >>> outbreak, more people are sick from meningitis tonight, the attempt to find those at risk. >>> and more on the hand sanitizers that are popular everywhere, how could they be a bad thing? we'll tell you what the doctors believe. >>> and making a difference, you see them at the airport, sniffing, doing their job, and in the world of working dogs, that is the big leagues. and wait until you hear w wait until you hear what they overcame to make it to the pros, nightly news begins now. this is nbc nightly news with brian williams. >>> good evening, if you were among the over 60 million of us who watched the presidential debate, then you know we saw two things that night, really, an energized mitt romney, and lackluster president obama, and tonight it appears what happened that night has the numbers on the move